DerivedSources.make: Regenerate message receiver sources on Makefile changes
Created attachment 454006 [details] Patch
Created attachment 454013 [details] Patch
Committed r290957 (248139@main): <https://commits.webkit.org/248139@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 454013 [details].
<rdar://problem/89929124>